(+-)-2,3,4,4a,5,6-Hexahydro-3-oxobenzo(h)cinnolin-8-carbonitrile (+-)-8-Cyano-4,4a,5,6-tetrahydrobenzo(h)cinnolin-3(2H)-one 121866-02-2 BRN 4257831 Benzo(h)cinnolin-8-carbonitrile, 2,3,4,4a,5,6-hexahydro-3-oxo-, (+-)- Benzo(h)cinnoline-8-carbonitrile, 2,3,4,4a,5,6-hexahydro-3-oxo-, (+-)-